So the situation is I gave a presumably straight man head on Saturday and I forgot to wash my hands until I got my home. My concern is that if I had some of his precum and cum on my hands that everything I then touched would be contaminated with the virus. I.e my keys, my phone, my hair, my clothes, my towel everything. If I did manage to get some fluid/virus on these things and then touched them and then my eyes, scratched the inside of my ear, or fingered myself would I be at risk of infection? I also had my blood drawn would the wound left from this allow for infection to occur if it came into contact with a contaminated surface or object? How long would the virus exist on a towel or hair? Thank you.

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So the situation is I gave a presumably straight man head on Saturday and I forgot to wash my hands until I got my home. My concern is that if I had some of his precum and cum on my hands that everything I then touched would be contaminated with the virus. I.e my keys, my phone, my hair, my clothes, my towel everything. If I did manage to get some fluid/virus on these things and then touched them and then my eyes, scratched the inside of my ear, or fingered myself would I be at risk of infection? I also had my blood drawn would the wound left from this allow for infection to occur if it came into contact with a contaminated surface or object? How long would the virus exist on a towel or hair? Thank you.

Reply:

This is absolutely no risk for HIV (or for any other STD). HIV is pretty difficult to transmit. Even with unprotected vaginal sex with an infected male, with deposition of semen in the vagina plus the prolonged exposure aftrer sex is complete, the average chance a woman will be infected is about 1 in a thousand. The amount of virus that could persist on your hands is not enough for transmission, even if you had immediately put your contaminated finger inside your vagina, mouth, eyes, etc. In addition, HIV dies immediately when contaminated fluids dried out. For the same reasons, nobody ever catches HIV from a contaminated environment, including personal "environment" like hair, clothes, or anything you might touch.

Whatever minor risk for HIV occurred from this event was from performing oral sex on your partner, not on anything that occurred afterward. Even then, the risk is low:  the average chance of catching HIV by performing fellatio (including ejaculation in the mouth) is around 1 in 20,000. That's equivalent to giving head to infected men once daily for 27 years before infection might be likely. And that's only if the male has HIV -- which, as you seem to know, is unlikely for your partner.

So no risk at all and no need for testing. If the oral sex was unprotected, you might want to consider a throat swab to check for gonorrhea. Other than that, no testing at all is necessary.

Let me know if anything isnt' clear.

HHH, MD